/* SSGC — core.css (3d-website engine). Palette = P5 VAULT.
 * Reference canvas: 1512 × 1024.
 */

:root{
  /* ---- palette: P7 ENAMEL — warm off-white, trust-blue accent ---- */
  --void:#fbfaf7;
  --void-2:#ffffff;
  --ink:#141210;
  --muted:#5a544c;
  --dim:#9a948c;
  --line:rgba(20,18,16,.12);
  --line-2:rgba(20,18,16,.06);
  --accent:#1f6feb;
  --accent-deep:#1a5fd0;
  --accent-soft:rgba(31,111,235,.10);
  --accent-2:#f2a900;
  --glass:rgba(255,255,255,.62);
  --glass-line:rgba(20,18,16,.10);
  --pill:#141210;
  --pill-ink:#fbfaf7;

  /* ---- light-mode depth (P7 ENAMEL requires shadows, not glow) ---- */
  --shadow-sm:0 2px 8px rgba(20,18,16,.06);
  --shadow-md:0 12px 30px rgba(20,18,16,.10);
  --shadow-lg:0 30px 70px rgba(20,18,16,.14);
  --contact:0 24px 40px -20px rgba(20,18,16,.35);

  /* ---- unit system: never edit ---- */
  --u:calc(100vh / 1024);
  --uw:calc(100vw / 1512);
  --h:clamp(var(--u), calc(var(--u) * .62 + var(--uw) * .38), calc(var(--u) * 1.18));

  /* ---- live channels: written by engine.js only ---- */
  --sp:0; --mx:0; --my:0;
  --tilt-x:0deg; --tilt-y:0deg;
  --depth-1:0px; --depth-2:0px; --depth-3:0px;
  --grain:.055;

  /* ---- per-scene channels ---- */
  --hero-y:0px; --hero-scale:1; --hero-opacity:1;
  --sub-y:0px; --sub-opacity:1;
  --veil-alpha:0; --veil-top:0; --veil-bottom:0;
  --panel-y:0px; --panel-opacity:0;
  --rail-x:0px; --rail-opacity:1;
  --plate-y:0px; --plate-scale:1.06; --plate-sat:1; --plate-bright:1; --plate-reveal:0;

  /* ---- layout ---- */
  --gutter:clamp(20px, 6.4vw, 92px);
  --nav-h:88px;
  --ease:cubic-bezier(.22, 1, .36, 1);

  color-scheme:dark;
  font-family:'Manrope',system-ui,-apple-system,'Segoe UI',sans-serif;
  color:var(--ink);
  background:var(--void);
  letter-spacing:0;
}
@supports (height:100dvh){ :root{ --u:calc(100dvh / 1024) } }

*{box-sizing:border-box}
html{background:var(--void);scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100%;overflow-x:clip;background:var(--void);
  -webkit-font-smoothing:antialiased;text-rendering:geometricPrecision}
button{border:0;font:inherit;color:inherit;background:none}
a{color:inherit;text-decoration:none}
img,video,canvas{display:block;max-width:100%}
::selection{background:var(--accent);color:#060910}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- stacking contract ---------- */
canvas#gl{position:fixed;inset:0;z-index:0;width:100%;height:100%;pointer-events:none}
.plate{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none}
.grain{position:fixed;inset:0;z-index:2;pointer-events:none;opacity:var(--grain);
  mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:180px 180px}
.vignette{position:fixed;inset:0;z-index:3;pointer-events:none;
  background:radial-gradient(120% 88% at 50% 42%,transparent 46%,rgba(6,9,16,.62) 100%)}
.veil{position:absolute;inset:0;z-index:4;pointer-events:none;opacity:var(--veil-alpha);
  background:linear-gradient(180deg,
    rgba(143,113,24,var(--veil-top)) 0%,
    rgba(201,162,39,calc(var(--veil-alpha) * .28)) 48%,
    rgba(6,9,16,var(--veil-bottom)) 100%)}
main{position:relative;z-index:10}
.chrome{z-index:60}
#menu{z-index:80}
.curtain{z-index:90}

/* ---------- type scale ---------- */
h1,h2{font-family:'Instrument Serif','Times New Roman',serif;font-weight:400;margin:0}
.hero h1{font-size:calc(96 * var(--h));line-height:.92;letter-spacing:-.02em}
h1{font-size:calc(72 * var(--h));line-height:.94;letter-spacing:-.02em}
h2{font-size:calc(52 * var(--h));line-height:.98;letter-spacing:-.015em}
h3{font-size:calc(23 * var(--h));line-height:1.15;font-weight:600;letter-spacing:-.01em;margin:0}
.lead{font-size:calc(20.5 * var(--h));line-height:1.5;color:var(--muted);margin:0}
p{font-size:calc(17 * var(--h));line-height:1.62;color:var(--muted);margin:0}
.eyebrow{font-size:calc(12 * var(--h));line-height:1;font-weight:600;color:var(--dim);
  letter-spacing:.16em;text-transform:uppercase;margin:0}
em{font-style:normal;color:var(--accent);position:relative}

/* ---------- buttons ---------- */
.pill,.ghost{display:inline-flex;align-items:center;justify-content:center;
  height:calc(52 * var(--h));padding:0 calc(30 * var(--h));border-radius:999px;
  font-size:calc(16.5 * var(--h));font-weight:600;letter-spacing:-.005em;
  cursor:pointer;transition:transform .28s var(--ease),box-shadow .28s var(--ease),
  background-color .28s var(--ease)}
.pill{background:var(--pill);color:var(--pill-ink)}
.pill:hover{transform:translateY(-2px);box-shadow:0 18px 46px var(--accent-soft)}
.ghost{border:1px solid var(--glass-line);color:var(--ink)}
.ghost:hover{background:var(--glass);transform:translateY(-2px)}

/* ---------- header ---------- */
.chrome{position:fixed;inset:0 0 auto 0;height:var(--nav-h);display:grid;
  grid-template-columns:auto 1fr auto;align-items:center;padding:0 var(--gutter);
  gap:calc(24 * var(--h));transition:background-color .32s var(--ease),
  border-color .32s var(--ease),backdrop-filter .32s var(--ease);
  border-bottom:1px solid transparent}
.chrome.is-stuck{background:rgba(6,9,16,.72);backdrop-filter:blur(18px) saturate(1.2);
  border-bottom-color:var(--line-2)}
.links{display:flex;justify-content:center;gap:calc(30 * var(--h))}
.links a{position:relative;color:var(--muted);font-weight:500;font-size:calc(15.5 * var(--h));
  transition:color .26s var(--ease)}
.links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .26s var(--ease)}
.links a:hover,.links a[aria-current="page"]{color:var(--ink)}
.links a:hover::after,.links a[aria-current="page"]::after{transform:scaleX(1)}
.chrome .right{display:flex;align-items:center;gap:calc(14 * var(--h));justify-self:end}
.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--gutter);top:12px;z-index:100;padding:10px 16px;
  background:var(--ink);color:var(--void);border-radius:8px}

/* ---------- burger + menu ---------- */
#burger{display:none;width:46px;height:46px;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;border-radius:999px;background:var(--glass);
  border:1px solid var(--glass-line);backdrop-filter:blur(12px);cursor:pointer}
#burger i{display:block;width:18px;height:1.5px;background:var(--ink);
  transition:transform .3s var(--ease)}
html.is-open #burger i:first-child{transform:rotate(45deg) translateY(3.25px)}
html.is-open #burger i:last-child{transform:rotate(-45deg) translateY(-3.25px)}
#menu{position:fixed;inset:0;display:grid;place-items:center;opacity:0;visibility:hidden;
  background:linear-gradient(180deg,rgba(6,9,16,.94),rgba(11,16,24,.98));
  backdrop-filter:blur(24px);transition:opacity .42s var(--ease),visibility .42s}
html.is-open #menu{opacity:1;visibility:visible}
#menu ul{list-style:none;margin:0;padding:0;display:grid;gap:calc(10 * var(--h));text-align:center}
#menu li{list-style:none;opacity:0;transform:translateY(18px);
  transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.is-open #menu li{opacity:1;transform:none}
#menu li:nth-child(1){transition-delay:.06s} #menu li:nth-child(2){transition-delay:.10s}
#menu li:nth-child(3){transition-delay:.16s} #menu li:nth-child(4){transition-delay:.22s}
#menu li:nth-child(5){transition-delay:.28s} #menu li:nth-child(6){transition-delay:.34s}
#menu li:nth-child(7){transition-delay:.40s}
#menu a{font-family:'Instrument Serif',serif;font-size:max(25px,calc(31 * var(--u)))}
#menu a::after{content:"→";display:inline-block;margin-left:.4em;
  transition:transform .28s var(--ease)}
#menu a:hover::after{transform:translateX(6px)}

/* ---------- sticky rig ---------- */
.rig{position:relative;height:calc(100vh + var(--len,2000px))}
.rig>.stage{position:sticky;top:0;height:100vh;overflow:hidden;isolation:isolate}

/* ---------- reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(calc(22 * var(--u)));
  transition:opacity .82s var(--ease),transform .82s var(--ease)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal][data-d="1"]{transition-delay:.07s}
[data-reveal][data-d="2"]{transition-delay:.13s}
[data-reveal][data-d="3"]{transition-delay:.19s}
[data-reveal][data-d="4"]{transition-delay:.25s}
[data-reveal][data-d="5"]{transition-delay:.31s}

/* ---------- entrances ---------- */
@keyframes rise{from{opacity:0;transform:translateY(calc(16 * var(--u)))}}
@keyframes fade{from{opacity:0}}
@keyframes draw{from{stroke-dashoffset:var(--len)}to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:no-preference){
  .chrome .brand,.links,.chrome .right{animation:rise .8s var(--ease) both}
  .hero h1{animation:rise .9s .06s var(--ease) both}
  .hero .lead{animation:rise .9s .14s var(--ease) both}
  .hero .actions{animation:rise .9s .22s var(--ease) both}
}

/* ---------- CSS-only fallback (tier 3) ---------- */
html.no-gl canvas#gl{display:none}
html.no-gl .fallback{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}
html.no-gl .fallback::before{content:"";position:absolute;left:50%;top:38%;
  width:120vmin;height:120vmin;transform:translate(-50%,-50%) translateY(var(--depth-1));
  background:radial-gradient(circle,var(--accent-soft) 0%,transparent 62%)}
html.no-gl .fallback::after{content:"";position:absolute;left:-20%;right:-20%;bottom:-30%;
  height:80vh;transform:perspective(900px) rotateX(64deg) translateY(var(--depth-2));
  background:repeating-linear-gradient(0deg,var(--line-2) 0 1px,transparent 1px 46px),
             repeating-linear-gradient(90deg,var(--line-2) 0 1px,transparent 1px 46px);
  mask-image:linear-gradient(to top,#000,transparent 72%)}
.fallback{display:none}
html.no-gl .fallback{display:block}

/* ---------- breakpoints ---------- */
@media (max-width:1500px){
  :root{--nav-h:80px}
  .hero h1{font-size:calc(80 * var(--h))} h2{font-size:calc(46 * var(--h))}
}
@media (max-width:1100px){
  .links{display:none} #burger{display:flex}
  .hero h1{font-size:calc(62 * var(--h))} h2{font-size:calc(38 * var(--h))}
  .rail{--rail-x:0px}
}
@media (max-aspect-ratio:11/10){
  :root{--m:min(calc(100vw / 430),1.32px);--u:var(--m);--h:var(--m)}
  main{display:flex;flex-direction:column}
  .rig{height:auto}
  .rig>.stage{position:relative;height:auto;min-height:100svh}
  canvas#gl{opacity:.72}
  .hero h1{font-size:calc(44 * var(--m));text-wrap:balance}
  .lead{font-size:calc(17.5 * var(--m))}
  .actions{flex-direction:column;align-items:stretch}
  .chrome{padding-left:max(var(--gutter),env(safe-area-inset-left));
          padding-right:max(var(--gutter),env(safe-area-inset-right))}
}
@media (min-width:600px) and (max-aspect-ratio:11/10){
  :root{--m:min(calc(100vw / 860),calc(100vh / 760),1.24px)}
}
@media (max-width:430px){ :root{--gutter:20px} .hero h1{font-size:calc(38 * var(--m))} }

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
  [data-reveal]{opacity:1;transform:none}
}

/* ---------- page-transition curtain ---------- */
.curtain{position:fixed;inset:0;background:var(--void);pointer-events:none;
  transform:translateY(100%)}
.curtain.curtain-in{animation:curtain-up .6s var(--ease) forwards}
.curtain.curtain-out{animation:curtain-down .5s var(--ease) forwards;pointer-events:auto}
@keyframes curtain-up{from{transform:translateY(0)}to{transform:translateY(-100%)}}
@keyframes curtain-down{from{transform:translateY(100%)}to{transform:translateY(0)}}